<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>视频标签</title>
</head>
<style>
    video {
        display: block;
        margin: 0 auto;
    }
</style>
<body>
    <video src="videos/sample.mp4" autoplay="autoplay" muted="muted" controls="controls"></video>
</body>
</html>